Expired events still displayed in category archives

Even after enabling the Expire last month events Immediately expire past events add-ons in Events+, the Expired Events are still being displayed in the native category archives. According to the plugin Help bubble:

Your archived events will be shown in archives, but visitors won't be able to RSVP.
Expired events are removed from your archives.

So, expired events should not be visible from the front-end, but are.